*{
    margin:0;
    padding:0;
}
body{background:lightcyan;}
ul{list-style-type:none;}
h2{text-align: center;height:60px;line-height:60px;}
a{color:lawngreen;text-decoration: none;}
#main{
    width: 1000px;
    height: 1000px;
    background-color: black;
    margin:0 auto;
    color:white;
}
#content .subjectLists{
    background:orange;
    clear:both;
}
#content .listContent li{
    float:left;
    padding:0 20px;
}
#content .subjects p{
    text-indent: 2em;
    line-height: 26px;
    margin:15px 0;
}
#content .subjects em{
    color:red;
    background:yellow;
    font-weight: 500;
    padding:0 6px;
    border-radius: 50%;
    font-style:normal;
    
}

#content .subjects p b{
    color:red;
    background:yellow;
    font-weight: 500;
    padding:0 10px;
    border-radius:5px;
    border-bottom:1px solid red;
}